What do you understand by biocontrol?

Explanation

### Step-by-Step Solution

1. **Definition of Biocontrol**: Biocontrol, short for biological control, refers to the use of living organisms or their natural products to manage pests and diseases affecting plants. This method aims to reduce the population of harmful organisms without relying on synthetic chemicals.

2. **Problems with Chemical Pesticides**: Chemical pesticides, while effective in controlling pests, come with several drawbacks:
- **Environmental Pollution**: The excessive use of chemical pesticides can lead to pollution of soil, water, and air.
- **Cost**: Chemical pesticides can be expensive, making them less accessible for some farmers.
- **Toxicity**: Many chemical pesticides are toxic, posing risks to human health and the health of animals.
...